cRIO using 9502 and 9514 for servo motor

Hello,

The 9514 states it is an interface from the cRIO to a servo driver and the 9502 states that it is a servo driver.  Can you hook the two together to work as a system?  Is there any benefit of using the two together as opposed to just one?  I couldn't find any reference in either manual of the other's use.

Thanks,

Zach